Keystones — Cornerstone
Five GCSE retrieval questions · 9 February 2026 · mathsvault.uk/keystones
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1. Number Dividing fractions
Calculate: 1⁄3 ÷ 4
Answer: 1⁄12 -
2. Algebra Two-step inequalities
Solve: 4x - 8 > 15
Answer: x > 5.8 -
3. Geometry Area of a right-angled triangle
Calculate the area of a right triangle with perpendicular sides 9cm and 10cm
Answer: 45cm² -
4. Ratio Unitary method
5 kg costs £42.20. What is the cost of 17 kg?
Answer: £143.48 -
5. Statistics Mode
Find the mode of: 15, 14, 14, 7, 14, 6
Answer: 14